SEO Terms — 3

Captcha is a code that often you need to enter in forms when registering a new account on the services or add to the website any material by guests. The reduction originates from Completely Automated Public Turing test to tell Computers and Humans Apart.

The ratio of the number of visitors to the site who commits any targeted action to the total number of visitors is called conversion. Targeted actions may include: check-in service, call, buy (order) product, newsletter subscription, add the site to your bookmarks, file downloading, etc.

Cookies (Cookies) is a tool to remember previously visited web sites. Created solely for the convenience of users of the Internet. Using Cookies, sites personification, collecting attendance statistics, and providing a variety of preferences, even to the choice of design.

Copyright — form of protection of intellectual property, which occurs immediately after the creation of the work and does not require official registration or registration. In other words, what is copyright is the recognition of a copyright in their work, whether it is text, melody, program, photograph, painting, etc. In the United States are given the opportunity to register their rights to property. Copyright does not cover ideas, directories, processes, principles, etc.

CPA (Cost Per Action) — a popular payment model of online advertising, the compensation is paid only for certain actions of visitors to the sites of advertisers, such as new user registration, loan through the web, buying in Internet shops, watching videos etc.